| error[E0106]: missing lifetime specifier |
| --> $DIR/issue-19707.rs:3:28 |
| | |
| LL | type Foo = fn(&u8, &u8) -> &u8; |
| | --- --- ^ expected named lifetime parameter |
| | |
| = help: this function's return type contains a borrowed value, but the signature does not say whether it is borrowed from argument 1 or argument 2 |
| = note: for more information on higher-ranked polymorphism, visit https://doc.rust-lang.org/nomicon/hrtb.html |
| help: consider making the type lifetime-generic with a new `'a` lifetime |
| | |
| LL | type Foo = for<'a> fn(&'a u8, &'a u8) -> &'a u8; |
| | +++++++ ++ ++ ++ |
| help: consider introducing a named lifetime parameter |
| | |
| LL | type Foo<'a> = fn(&'a u8, &'a u8) -> &'a u8; |
| | ++++ ++ ++ ++ |
| |
| error[E0106]: missing lifetime specifier |
| --> $DIR/issue-19707.rs:5:27 |
| | |
| LL | fn bar<F: Fn(&u8, &u8) -> &u8>(f: &F) {} |
| | --- --- ^ expected named lifetime parameter |
| | |
| = help: this function's return type contains a borrowed value, but the signature does not say whether it is borrowed from argument 1 or argument 2 |
| help: consider making the bound lifetime-generic with a new `'a` lifetime |
| | |
| LL | fn bar<F: for<'a> Fn(&'a u8, &'a u8) -> &'a u8>(f: &F) {} |
| | +++++++ ++ ++ ++ |
| help: consider introducing a named lifetime parameter |
| | |
| LL | fn bar<'a, F: Fn(&'a u8, &'a u8) -> &'a u8>(f: &F) {} |
| | +++ ++ ++ ++ |
| |
| error: aborting due to 2 previous errors |
| |
| For more information about this error, try `rustc --explain E0106`. |
